BS ISO 23900-2-2015 Pigments and extenders Methods of dispersion and assessment of dispersibility in plastics Determination of colouristic properties and ease of dispersion in plas.pdf
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1、BSI Standards PublicationBS ISO 23900-2:2015Pigments and extenders Methods of dispersion andassessment of dispersibility inplasticsPart 2: Determination of colouristicproperties and ease of dispersion inplasticized polyvinyl chloride by two-rollmillingBS ISO 23900-2:2015 BRITISH STANDARDNational for
2、ewordThis British Standard is the UK implementation of ISO 23900-2:2015.The UK participation in its preparation was entrusted to Technical Committee STI/1, Pigments.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to
3、include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 86262 5 ICS 87.060.10 Compliance with a British Standard cannot confer immunity from legal obligations.T
4、his British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e d ISO 2015Pigments and extenders Methods of dispersion and assessment of dispersibility in plastics Part 2:
5、Determination of colouristic properties and ease of dispersion in plasticized polyvinyl chloride by two-roll millingPigments et matires de charge Mthodes de dispersion et valuation de laptitude la dispersion dans les plastiques Partie 2: Dtermination des proprits colorimtriques et de la facilit de d
6、ispersion dans le polychlorure de vinyle plastifi par calandrage sur bicylindreINTERNATIONAL STANDARDISO 23900-2First edition 2015-05-01Reference number ISO 23900-2:2015(E)BS ISO 23900-2:2015ISO 23900-2:2015(E)ii ISO 2015 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2015All rights reserved. U
7、nless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at th
8、e address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 23900-2:2015ISO 23900-2:2015(E)Foreword iv1 Scope . 12 Normative re
9、ferences 13 Terms and definitions . 14 Principle 25 Material 26 Apparatus . 27 Sampling 28 Procedure. 38.1 Milling at (160 5) C . 38.1.1 Premixing of the test materials . 38.1.2 Two-roll milling 38.1.3 Pressing . 38.2 Milling at (130 5) C . 49 Photometric measurement 410 Evaluation 410.1 Evaluation
10、of colouristic properties in a white reduction . 410.2 Evaluation of the ease of dispersion . 411 Test report . 412 Precision . 5Annex A (informative) Description of the basic compound 6Bibliography 8 ISO 2015 All rights reserved iiiContents PageBS ISO 23900-2:2015ISO 23900-2:2015(E)ForewordISO (the
11、 International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committe
12、e has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechni
13、cal standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in
14、 accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. D
15、etails of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an
16、 endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword Supplementary information .The committee
17、responsible for this document is ISO/TC 256, Pigments, dyestuffs and extenders.ISO 23900 consists of the following parts, under the general title Pigments and extenders Methods of dispersion and assessment of dispersibility in plastics: Part 1: General introduction Part 2: Determination of colourist
18、ic properties and ease of dispersion in plasticized polyvinyl chloride by two-roll milling Part 3: Determination of colouristic properties and ease of dispersion of black and colour pigments in polyethylene by two-roll milling Part 4: Determination of colouristic properties and ease of dispersion of
19、 white pigments in polyethylene by two-roll milling Part 5: Determination by filter pressure value test Part 6: Determination by film testiv ISO 2015 All rights reservedBS ISO 23900-2:2015Pigments and extenders Methods of dispersion and assessment of dispersibility in plastics Part 2: Determination
20、of colouristic properties and ease of dispersion in plasticized polyvinyl chloride by two-roll milling1 ScopeThis part of this ISO 23900 specifies a method of determining the colouristic properties of a test pigment relative to a standard, and the ease of dispersion DHPVC-Pof pigments from the diffe
21、rences in colour strength on dispersing colouring materials under various conditions in plasticized polyvinyl chloride (PVC-P) compounds.The method is appropriate for use with organic and inorganic black and colour pigments and for pigment preparations.The ease of dispersion determined in this way i
22、s valid only for the dispersion equipment, dispersion conditions and dispersion medium being used. The use of test conditions differing from those specified may give different results; this applies both to the absolute magnitude and to the relation between values of the ease of dispersion of various
23、 pigments. The subscript DHPVC-Pis therefore used to designate the value obtained as specified in this part of ISO 23900.The principle of this part of ISO 23900 may also be used for routine quality control purposes by reference to the photometric data generated from the sheets milled at 130 C. For q
24、uality control purposes, the ratio of pigment to TiO2may be agreed between the interested parties. Ratios of 1:10 for organic pigments and 0,2 to 0,5:1 for inorganic pigments are suggested as convenient and widely used standard ratios.Annex A is informative and gives a description of a suitable basi
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